package com.example.design.patterns.geekbang.行为型.观察者模式.经典结构;

public class ConcreteObserverTwo implements Observer {
    @Override
    public void update(Message message) {
        //TODO: 获取消息通知，执行自己的逻辑...
        System.out.println("ConcreteObserverTwo is notified.");
    }
}
